Santa Barbara oil spill event was most responsible for the U.S. Congress's passing the National Environmental Protection Act of 1969.
<u>Explanation:</u>
Santa Barbara oil spill occurred in the year 1969 which was considered to be the largest oil spill. About 80,000 to a lakh barrels of crude oil was spilled in Santa Barbara causing a phenomenal pollution in the ocean.
The people became outrageous and that’s when the NEPA (National Environmental Protection Act) was formed in 1969. The NEPA was formed by President Nixon to create an awareness among the public and to protect the environment.
This act was introduced to follow proper policy management and to facilitate the public involvement too. For any new project to be established they have to get the approval from the NEPA.
Natural selection. Only spiders that were more resistant to the pesticide lived through the first spraying of the pesticide, thus we're the only ones that could reproduce. This in turn made the offspring of the previous generation more resistant as well; thus making the pesticide less effective.
Answer:
<u>A focal infection</u> is a small region of infection, from where the pathogen can move to other areas of the body to cause a secondary infection.
Explanation:
The focal infection theory is a theory that states that many chronic diseases (such as cancer, arthritis, mental illness) are caused by a focal infection. A focal infection is a small region of infection or a localized infected region, which can lead to a secondary infection at a site, which is susceptible to infections. Examples of such focal regions are nasal sinuses, kidney, gall bladder, liver, etc.
<u>Therefore,</u><u> a focal infection </u><u>can be defined as a small region of infection, from where the pathogen can move to other areas of the body to cause a secondary infection</u>.
Answer:
1.73 i think it will be answer
Till this day We are always learning more and more so I think this can be helpful for future vaccines of diseases
